Double wall-block.



PATLNTBD SEPT. 29, 190s. G. F. HAGLRMAN.

DOUBLE WALL BLOCK.

APPLIQTIOF'I'ILED HAY 11. 1903.

Inf/anton l() IODEB.

Eg: 6.' y www Wnease,

#La W UNITED STATES fatented September 29, 1963.

PATENT OEEICE.

Y DOUBLE WALL-BLOCK.

SPECIFICATION forming part of Letters Patent No. 739,858, dated September 29, 1903.

Application leli May 11,1903. Serial No. 156,530. (No model.)

T0 all wwnt 7215 nza/y concern:

Beit known that I, GEORGE F. I-IAGERMAN, residing at Chelmsford, in the county of Middlesex and State of Massachusetts, have invented certain Improvements in Double lVall- Blocks, of which the following is a specication.

The present invention relates to a system for distributing electrical service by means of metallic circuit-conductors from main circuits at way-stations, and has particular reference to supports for telephone-substation conductors-extending. from main pole-lines to the building in which the telephone apparatus is located.

Heretofore `much difculty has been experienced in extending telephone-conductors from a pole to a building, owing to the crosses occurring between the conductors, as it is necessary to leave the conductors much slacker than between the poles to avoidlthe humming noises where the conductors are drawn up taut, as there is more or less sway to the pole and none to the building, and also if the conductors are pulled tight the attachments or the conductors are liable to break. Therefore the conductors are left slack between the pole and the house, and loop-swinging crosses occur when arranged in the same horizontal plane, as is usual; but if they are extended one above the other the danger from crosses is materially lessened. However, with this arrangement it is not convenient to bring the conductors down the side of the building, as they would come together unless one of the conductors is led to an insulator; but if the conductors are above one another at the pole and parallel or in the same horizontal plane on the building the liability to crosses between them is practically eliminated. To effect this result is the object of my invention, and in carrying out v the same I provide a metal device, termed a block,77 consisting of a frame with means for attachment to a cross-arm or the side of a building and having on each end an insulator. One block may be secured to a crossarm in a vertical position, while the second block is fastened to the wall of a building in a horizontal position, and bridle-wires connect the line conductors with insulators upon the cross-arm, from which extend looselyhanging conductors to the insulators onthe second block, attached to the house, and continue into the house as insulated wires, all of which I will now proceed to describe, and point out in the claims.

In the drawings, which form a part of and illustrate the invention, Figure l is a front view of a metal block embodying the invention. Fig. 2 is a section on line no @c of Fig. 1. Fig. 3 is a section on line y1] of Fig. 1. Fig. 4 is a section on line a' .e ot' Fig. 1, Fig. 5 is a horizontal view showing a block attached to a cross-arm of a pole and one secured toa wall of a building to illustrate the combination of circuits with the blocks. Fig. 6 is a -top view of the apparatus and circuits shown in Fig. 5, and Fig. 7 is an end view of a crossarm to show a modification in the way of attaching a block thereto.

In the drawings, A represents the metal block, and consists of a channel-shaped base l, having ribs 2 2 on each side, from which at each end extend the right-angled standards 3 3 and central of which is the stud 5. The standards or end pieces 3 3 are perforatedto receive the rod 6, provided with a head gat one end and a nut h at the other end, and between the head and its adjacent end piece 3 is a metal washer f and an insulator d, and between the nut lt and the end piece-8 nearest thereto is a washer f and an insulator d. The insulators d d are preferably made of porcelain, although any other suitable material may be employed. The rod 6 rests in a slot 9 in the upper part of the stud 5, and thereby receives .additional support. The washers f are employed in order that theA insulator may not be splintered when the nut h is screwed hard up to secure the insulators firmly in place. Suitable angle-braces 4 4 are cast with the frame to make the same stiff and rigid, and extending from each side of the frame at its central portion are ears 7 7, having holes 8, through which screws or bolts are inserted to hold the block firmly to a cross-arm or to the wall of a building.

Figs. 5 and 6 show the preferable way of attaching the metal block to a cross-arm and to the wall of a building. C represents the end ot' a cross-arm secured to a pole P, and I is an insulator upon a pin p in the crossarm, to which is attached a line conductor a.

IOO

` on the metal block A2 the conductors c c aren A second line conductor a is shown, which is attached to an insulator on the same cross'- arm behind the insulator I. The metal block A is screwed to the side of the cross-arm in a vertical position. While the second block A2 is secured to the wall tu of a building in a horizontal position and conductors c c extend from the insulators (td of the block A to the insulators d d of the block A2 without crossing and with a one-quarter twist, starting from block A, disposed in a vertical relation and connecting with block A2 in a horizontal or parallel relation,the main conductors are connected to conductors c c by bridle-Wires b Z). By this arrangement it will be seen that the 'conductors c c can be left in a slack or loose condition and not be subject to accidental contactor crosses. From the insulators CZ CZ carried vertically down or up the wall'w, usually by insulated continuations c2 c2, and enter the building at any desired point and terminate with the telephone apparatus, (represented by the telephone T.) Y

Fig. 7 shows the metal block attached toY the under. side of the crossearm C, which is sometimes done when for anyreason it is desired to extend the conductors c2 c2 horizontally of the wall of the building, in which case the metal block A2 will be placed at right angles to the block A on'V the cross-arm.

I claim as my invention- 1. A metal block for the purpose specified consisting of a base, a centrally-located perforated ear on each side thereof, a perforated standard at Yeach end and a central stud from the base, a rod extending through the standards and resting in said stud provided with washers, a head anda nut, an insulator between thehead and one standard and another insulator between Vthe nut and the second standard.

2. A metal block for the purpose specified, consisting of'a basechannel-shaped in crosssection, perforated'ears on each side of `the base central of its length, perforated standards at each end of the base and integral therewith, a stud on the base midway of the perforated standards,a rod extending parallel with the base through the perforations in the standards resting in a groove in the top of the stud, provided with a head, a nut, and washers, with an insulator between the head and the outside ot' one standard, and a second insulator between the nut and tho outside of the second standard, as set forth.

In testimony whereof I have signed my nameto this specification, in the presence of two subscribing witnesses, this 6th day of May, 1903.

GEORGE F. IIAGERMAN.

Witnesses:

AGNES I. Mci-Cov, WILLIAM C. LORING. 

